an astronomical instrument used to determine latitude and longitude at sea by measuring angular distances, especially the altitudes of sun, moon, and stars.
Astronomy. the constellation Sextans.
更多sextant例句
Then, he could actually use a sextant, and his way of working out his latitude was chaste and picturesque.
A sextant for measuring the latitude of any place can be easily constructed as follows: While a board, 1 in.
I had with me an admirable Hadleys sextant, and an artificial horizon, and I corrected the mean refraction of the suns rays.
While Dick was recovering the sextant, Carl was making Townsend as comfortable as possible on the floor of the car.
By six o'clock the schooner was well out to sea, and as it grew dark the Captain came on deck with his sextant.